Winding machine



April 21, 1925.

- A. D. SCOTT WINDING MACHINE Filed Oct. 5, 1923 DECE/FSED MA Y 1/ 56077 sxscuny/x I ATTORNEYS Patented Apr. 21, 1925.

UNITED STATES ,5 4,8 PATENT OFFICE.

ARCHIBALD D. SCOTT, PECEQSED, LATE F JERSEY CITY, NEW JERSEY; BY MARY V. SCOTT, nxnournrx, 01 J EBSEY CITY, NEW JERSEY, ASSIGNOR TO VARLEY DUPLEX MAGNET COMPANY, A CORPORATION OF NEW JERSEY.

WINDING MAGHIN E.

Application filed October 3, 1 923. Serial No. 666,269.

To all whom it may concern:

Be it known that ARCHIBALD D. Soorr'r, deceased, late a citizen of the United States, residing at Jersey City, in the county of t Hudson and State of New Jersey, invented certain new and useful Improvements in Winding Machines, of which the following is a full, clear, and exact description.

This invention relates to machines for winding strand material, such as wire, particularly to machines of the character de; scribed in U. S. Patent No. 1,368,536, granted February 15, 1921, to J. C. Anderson, and is in the nature of an improvement .15 upon the type of machine forming the basis of U. S. Patent 1,357,434 issued Nov. 2, 1920 to J. C. Anderson.

The machine referred to in said patents is adapted more especially to the winding of copper wire into electrical helices, the wire of each helix being wound in superposed layers with an intervening layer or layers of sheet material, such as paper, separating the layers of wire from each other. 7 A plurality of these helices are usually wound simultaneously upon a single spindle, the various wires for each helix being individuall directed to the spindle by suitable gui ing rolls which are mounted succesgo sively upon a reci rocating rod arranged parallel to the spin lo, the movement of the rod, and of the various guides carried thereby, causing the wire to be spirally wound, and the under layer to be started at 55 each reversal of movement. 1 It has been found that at the ends of the layers where the direction of movement of the guides is reversed, it fre uently happens that the pitch of the win ing fails to reverse roperly, with resulting. crowding of the wire at the beginning of a new layer.

In U. S. Patent 1,357,434, hcreinbefore referred to, an attempt was made to prevent the crowding of the Wire at the beginning of each new layer by imparting to the rotary cam, which gives the movement to the guides, an endwise movement at the instant.

of each reversal. To accomplish this, the end of the cam was provided with a rail to with inclined approaches at both ends, and means was rovided for yieldingly pressing the rail against a roller. In practice, it was found that it was impossible, with the use of a roller, to produce the same variation in the pitch of the winding at the beginning of the formation. of-each layer, even though the inclined approaches to the rail were ldentical.

An object of this invention is to provide an lmproved Winding machine in which the crowding of the wires at the beginning of the new layers will be prevented, and with which the pitch of the wire at the beginning of each layer will be uniform for all layers. Other objects and advantages will be apparent from the following descri tion ofan embodiment of the invention, and the novel features will be particularly pointed out hereinafter in claims.

In the accompanying drawing:

Fig. 1 is a plan of a portion of a windin machine, including the cam, traverse r0 and spindle.

Fig. 2 is a longitudinal section through the controlling cam, taken substantially along the line 2-2 of Figure 1.

Fig. 3 is a sectional elevation of the machine, taken substantially along the line 3--3 of Figure 1.

Fig. 4 is a sectional elevation through a portion of the machine, the section being taken substantially along the line 44 of Figure 2.

In the illustrated embodiment of the invention a winding spindle 1 is rotatably mounted in the frame 2 of the machine in any suitable manner, and the spindle carries thereon a form 3 upon which the coils are to be wound, only two of the coils being shown. A traverse rod 4 is disposed parallel with the winding spindle, and is suitably mounted in bearings 5 (one only being shown) for reciprocation in an endwise direction. A plurality of hubs 6 are adjustably mounted upon the traverse rod 4, and may be fixed in various adjusted positions upon the rod. Each hub is provided with guide rolls 7 and 8 over which the wire 9 to be wound is conducted, the wires passing from the rolls to the form 3 upon the winding spindle.

A bearing 10 is secured, in any suitable manner, to a frame element 11, and a c lin- (lrical cam drum 12 is rotatably and sli ably mounted upon the. peripheral portion of the bearing 10. A gear 13 is secured to an end of drum 12 for rotation and endwise movement therewith. The gear 13 is also pinned to a short shaft 14, which is rotatably and axially slidable within the bearing 10, the axis of the shaft 14 being the axis of rotation of the gear and cylindrical cam 12. A. helical sprin 15 is disclosed between a col-. lar 16 pinned to the shaft 14 and a shoulder 17 on the bearing 10, so as to constantly and yieldingly press the shaft 14, and, through it, the gear and cam toward the frame ele ment 11. The gear 13 is rotatably driven in any suitable manner, such as from the source of power which rotates the winding spindle. The cam is provided with a peripheral cam groove 18, which undulates endwise of the cam while extending peripherally thereof.

A shoe 19 is fixed upon an end of the traverse rod 4:, and carries a follower pin 20, which is adapted to a run in the cam groove 18. As the cylindrical cam is rotated concomitantly with the winding spindle, the cam groove 18 will act through the follower pin 20, and the shoe 19 to slowly reciprocate the traverse rod 4:, and thus cause the wires 9 to be wound spirally in superposed layers upon the drum 3.

Upon the frame element 11', a pair of abutment blocks 21 may be mounted, preferably capable of a limited adjustment arcuately about the axis of rotation of the shaft 14, the abutment blocks 21 being suitably clamped, or otherwise secured, in various adjusted positions, such as by screws 22 which draw together sectional parts of the blocks against opposite faces of the element 11. The abutment blocks may each have an inturned flange 23, which runs in an arcuate groove 24 in the face of the frame element 11, so as to assist in confining the abutment blocks to the frame element and guiding them during their adjustment- Each abutment block 21 is provided with a straight in clined cam surface 25, the cam surfaces 25 being reversely inclined to the abutting end face of the cam 12 and facing in opposite directions from one another.

The abutting end of the cam cylinder 12 is provided with a raised peripheral rail 26, which extends partway around the periphery of the drum, and at each end is provided with an inclined approach 27. The spring 15, is yieldingly urging the cylindrical cam 12 toward the frame element 11, will press the end of the cam against the abutment blocks 21. During the rotation of the cylindrical cam 12, one of the inclined approaches of the rail 26 will engage with one of the cam surfaces 25 of an abutment block 21. The reaction between the inclined approach 27 and the cam surface 25 will cause an endwise or .a'xial movement of the cam 12 away from the abutment block and against the action of the spring 15. The rail 26 will then ride upon the outer end face of the engaged abutment block 21, which will hold the cam 12 at its endwise adjusted position, while the rail 26 remains in contact with either of theabutments 21. When the rear end of the rail 26 passes over the last abutment block, its inclined approach will ride down the inclined cam surface 25 of the last abutment block and allow movement of the cam 12 toward the abutment block under the action of the spring 15. The length of the rail and its position on the cam 12 are so related to the ab'utment blocks 21 that the endwise movement of the cylindrical cam will occur at approximately each reversal of movement of the traverse rod 4:, so that the traverse rod ides carried thereby will, at the instant o reversal, be given a more rapid endwise movement than that caused by the cam groove 18 and produce a relatively coarse spiral of the wire for a short distance, at the beginning of each layer. With this arrangement, the crowding of the wires at the beginning of each layer will be avoided.

It has been found by experience that with the inclined cam surfaces 25 and the inclined approaches to the ends of the rail 26, the relatively coarse spiral'formed at beginning of each layer will be uniform and equal for every layer.

In the operation of the device, the abutment blocks 21 are adjusted to the proper positions, so that theywill afi'ect endwise movements of the cylindrical cam 12 at the reversals of movement of the traverse rod, and are secured in the adjusted positions. The cam in rotating, produces the ordinary endwise movements of the traverse rod to form the close spiral turns of the wire in each coil, and at approximately the instant of reversal of direction of travel of the traverse rod, the cam will be given an endwise movement to cause an' additional movement of the traverse rod and through it produce a short relatively coarse spiral at the beginning of each layer. The frame element 11 and the abutment blocks thereon may together be considered as a relatively stationary element abutting an end of the cam 12 and carrying the pair of reversely inclined cam surfaces 25.

It will be obvious that various changes in the details herein described and illustrated, for the purpose of explaining the nature of the invention, may be made by those skilled in the art- Within the'principle and scope of the invention, as expressed in the appended claims.

I claim:

1. In a machine for winding strand material, the combination of a winding spindle, a strand guide having a movement with respect to the spindle to form superposed layers of winding upon the spindle and means for equally and momentarily altering the normal rapidity of said movement at each reversal in direction thereof.

2. In a machine for winding strand material, the combination of a winding spindle,

a strand guide having a movement with respect to the spindle to form superposed layers of winding upon the spindle and means for momentarily and equally increasing the ,normal rapidity of said movement at each reversal in direction thereof.

3. In a machine for winding strand material, the combination of a winding spindle, a strand guide having a reciprocating move ment to form superposed layers of winding upon the spindle and means for momentarily increasing the normal rapidity of said movement at each reversal in direction thereof equally at both limits of movements.

4. In a machine for winding strand material, the combination of a winding spindle, a reciprocating rod for directing the strands to form'layers upon the spindle and means for increasing the normal rapidity of movement of the rod momentarily at the beginnin of each traverse and equally at both limlts of movements. v

5. In a machine for winding strand material, the combination of a winding spindle, means for winding the material spirally 1n superposed layers upon the spindle and means for momentarily increasing the pitch of the winding at the beginning of each layer and equally at both limits of movements.

6. In a machine for winding strand material, the combination of a winding spindle,

a layerforming guide, a cylindrical rotary cam having a cam track in its cylindrical surface adapted to cause the reciprocation of pressing said cam axiallyand toward the cam surfaces, said cam surfaces being, re-

. versely inclined to the end of the cam for cooperation with the inclined ends of the rail, whereby as the rail rides up and down said cam surfaces successively, the cam will partake of an axial movement and momentarily vary its effect upon the guide.

7. The machine substantially as set forth in claim 6 in which the stationary cam surfaces and the inclined ends of the rail are straight throughout their length, whereby the variations in the effect of the cam upon the guide at all reversals in direction of travel of the guide will be equal.

8. The machine substantially as set forth in claim 6 in which the stationary cam surfaces are provided upon members separately adjustable in the direction of the travel of the rail, whereby the instants of variations in the effects of the cam upon the guide may be changed.

9. In a machine for winding strand material, a winding spindle, a layer forming guide for the strand-of material, a rotary cam for operating the guide in opposite directions alternately, a relatively stationary element abutting an end of the cam and having on the abutting face a pair of cam surfaces reversely inclined to the plane of the abutting end of the cam, spaced accurately around the axis of rotation of the cam, and facing in opposite directions, said cam being also translatable toward and from the cam surfaces on said element and having a-rail on the abutting face with inclined approaches at each end for cooperation with the cam surfaceslwhereby the variation in pitch of the strand being wound, at the ends of each layer, caused by the riding of the rail successively up and down the cam surfaces, will be equal.

10. In a machine for winding strand material, the combination of a winding spindle,

alayer forming guide, a cylindrical rotary cam having a cam track in its cylindrical surface adapted to cause the reciprocation of the guide, and means including two reversely inclined straight cam surfaces acting against the cam for moving it in an axial direction at each reversal of direction of the guide to augment the effect of the track upon the guide.

In witness whereof, I hereunto subscribe my signature.

MARY V. SCOTT,

Ewecutfim 0f Archibald D. Scott, Deceased. 

